Abstract
The first stable silene was synthesized only in 19811 after decades of intensive unsuccessful attempts.2 Despite intensive recent research, the study of silenes is still in its infancy.2 For example, only two methods for the synthesis of stable silenes are currently known1,3 and the X-ray structures of only 2 silenes, (Me3Si)2SidC(OSiMe3)Ad (1)4 and Me2SidC(SiMe3)SiMe(tBu)2 (2),5 have so far been determined. More recently West et al. reported the first X-ray structure of a 1-silaallene, R2SidCdCR2. We report here an important new synthetic method for preparing stable silenes having a novel substitution pattern and report the X-ray structure for one of these silenes. We7a and others7b have reported recently that transient silenes can be synthesized via a sila-Peterson-type reaction (eq 1). For
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